Portion of a power converter



FIG. 1 is a front, top and right side perspective view of a portion of a power converter, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are for illustrative only and form no part of the claimed design. 

The ornamental design for a portion of a power converter, as shown and described. 